NIOSH Mining Major Equipment
Direct Shear Test Frame |
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| Testing core samples on the direct shear test frame |
The large scale direct shear test frame (300,000 pound axial and shear forces) with programmable control is used for biaxial testing on rock, concrete, and soil samples. The sample size can vary from 1 inch diameter rock cores to 14 inch square concrete blocks.
Site: Spokane Research Laboratory
Laboratory: Soil/Rock Properties Laboratory